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Annulation with and without co-insertion: striking a balance in reactivity of chromium carbene complexes with chalcogen-stabilized iron cluster appendage

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Title Annulation with and without co-insertion: striking a balance in reactivity of chromium carbene complexes with chalcogen-stabilized iron cluster appendage
 
Creator MATHUR, PRADEEP
GHOSH, SUNDARGOPAL
SARKAR, AMITABHA
RHEINGOLD, ARNOLD L
GUZEI, ILIA A
 
Subject structural properties
spectroscopy
crystallographic shear
cluster analysis
 
Description Two new sets of products [(CO)6Fe2EE′{μ-indanone}] (2a: E, E′=Se; 2b: E=S, E′=Se) and [(CO)6Fe2EE′{μ-(2-ethoxy, α-naphthol)}] (3a: E, E′=Se; 3b: E=S, E′=Se; 3c: E=S, E′=Te) have been isolated from the thermolysis of the cluster-bound Fischer carbene complex, [(CO)6Fe2EE′{μ-C(Ph)=C–C(OEt)=Cr(CO)5}], 1a–c (1a: E, E′=Se; 1b: E=S, E′=Se; 1c: E=S, E′=Te) in THF. The products are formed by annulation pathway with and without the intermediacy of CO insertion step, from the same substrate. They have been characterized by IR and 1H, 13C, 77Se and 125Te NMR spectroscopy and the structural types were unequivocally established by crystallographic analysis of compounds 2a and 3c.
 
Publisher Elsevier
 
Date 2009-03-09T07:41:17Z
2011-11-25T18:44:41Z
2011-12-26T13:06:55Z
2011-12-27T05:54:53Z
2009-03-09T07:41:17Z
2011-11-25T18:44:41Z
2011-12-26T13:06:55Z
2011-12-27T05:54:53Z
2000
 
Type Article
 
Identifier Tetrahedron 56(28), 4995-5000
0040-4020
http://dx.doi.org/10.1016/S0040-4020(00)00213-1
http://hdl.handle.net/10054/892
http://dspace.library.iitb.ac.in/xmlui/handle/10054/892
 
Language en